Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] ?"viruses" Realm Riboviria Order Nidovirales Suborder Tornidovirineae [monotypic] Family Tobaniviridae Subfamily Torovirinae [monotypic] Genus Torovirusᵀ Subgenus Renitovirus 1.1 Bovine torovirus 1.2 Equine torovirusᵀ 2 Porcine torovirus